Spikes Tactical Complete Upper Receiver 223 Rem/5.56 NATO AR Rifles – 14.5″ Pinned Barrel, Mid-Length Gas (STU5050-CQ2D)

• Complete upper receiver assembly designed for AR rifles chambered in 223 Remington and 556 NATO
• Features 14.5 inch barrel pinned to 16 inch overall length for compliance
• Mid length gas system supports smoother cycling and reduced recoil impulse
• Includes phosphate M16 bolt carrier group for consistent operation
• Equipped with 12 inch quad rail handguard for accessory mounting flexibility
• Compatible with AR platform rifles using standard upper receiver configurations

The Spike’s Tactical Complete Upper Receiver 223 Rem/556NATO 14.5″ Barrel Mid-Length Gas System is a complete AR upper receiver designed for use on AR rifle platforms.

This complete upper receiver includes a forged upper receiver and a 14.5 inch lightweight barrel with a pinned muzzle device bringing overall length to 16 inches. It features a mid-length gas system and a 1:7 twist barrel suitable for 223 Remington and 5.56 NATO cartridges. The assembly includes a phosphate M16 bolt carrier group and a 12 inch CRR quad rail for accessory mounting. This model is configured with a flat top receiver and no sights installed, allowing user-selected optics. In standard configurations, the Spike’s Tactical Complete Upper Receiver is used for range setups and rifle builds requiring a pre-assembled upper with verified factory inspection and test firing.